weird dream

the company finally informed me about the date to start work. had a shock when the HR called not because i wasn't expecting it, but i realize i left my phone and wallet in the dressing room when i was having my shower.

today, I recall that I have been having the same dream frequently recently. Its about me suddenly realize my exams are just a week away and I wasn't prepared at all. Was feeling shocked, depressed and regretful about why did I let such important matter slipped off my mind. I wonder whats wrong with me for having such a dream. Is my dream telling me that I have something important slipped off my mind or what?